Lucky 31
What is a Lucky 31 Bet?
5 selections: 5 Singles, 10 Doubles, 10 Trebles, 5 Four-folds, 1 Five-fold.
Lucky 31 Composition
Contains 5 Singles, 10 Doubles, 10 Trebles, 5 Four-folds, 1 Five-fold.
| Bet | Selections | Quantity |
|---|---|---|
| Singles | Any single selection | 5 |
| Doubles | All pairs | 10 |
| Trebles | All triples | 10 |
| 4-folds | All 4-selection combinations | 5 |
| 5-folds | All 5-selection combinations | 1 |
Permutations
- Singles: Each selection as a single bet. (5 total)
- Doubles: All possible pairs across your selections. (10 total)
- Trebles: All possible triples across your selections. (10 total)
- 4-folds: All 4-selection combinations. (5 total)
- 5-folds: All 5-selection combinations. (1 total)
Lucky 31 Example
| Selection Name | Odds |
|---|---|
| Team A | 2/1 |
| Team B | 3/1 |
| Team C | 4/1 |
| Team D | 5/1 |
| Team E | 5/1 |
Calculate all 31 component bets and sum returns. Use the calculator below to see exact returns for each component bet and the total.
Examples
Football (decimal odds)
Five selections around 1.80–2.60 → 31 bets, including singles for safety net.
Horse racing (fractional odds)
Five horses (13/8–4/1) in a Lucky 31.
Fractional odds explained
- Written as a/b (e.g., 5/2). This means you win a profit of a for every b you stake.
- Profit = stake × (a ÷ b). Total return = stake + profit.
- Quick convert to decimal: 1 + (a ÷ b). Example: 9/4 → 1 + 9/4 = 3.25.
- Example: at 2/1, a £10 stake: profit £20, total return £30.
Formulas
Singles
Each single: Return = stake × odds.
Doubles
Each double: Return = stake × odds of pick 1 × odds of pick 2. Add all doubles.
Trebles
Each treble: Return = stake × odds1 × odds2 × odds3. Add all trebles.
4-folds
Each 4-fold: Return = stake × multiply the odds of 4 selections. Add all 4-folds.
5-folds
Each 5-fold: Return = stake × multiply the odds of 5 selections. Add all 5-folds.
Total return = add up the returns from all of the above component bets.
Reasons for making a Lucky 31 Bet
- Increased chances of winning: Multiple combinations create more ways to get a return than a single bet.
- Potential for significant returns: When several selections win, combined payouts can grow quickly.
- Risk management: Some combinations can still return even if not all selections win.